Let say I have a file named api-key.strategy.ts

import { PassportStrategy } from '@nestjs/passport';
import { Injectable } from '@nestjs/common';
import { HeaderAPIKeyStrategy } from 'passport-headerapikey';
import { ConfigService } from '@nestjs/config';

@Injectable()
export class ApiKeyStrategy extends PassportStrategy(HeaderAPIKeyStrategy) {
  constructor(private readonly configService: ConfigService) {
    super(
      {
        header: 'x-api-key',
        prefix: ''
      },
      true,
      (apiKey: string, done: any) => {
        if (apiKey === 'MY_API_KEY') return done(true);
        else return done(false);
      }
    );
  }
}

Based on above codes, how to create a Jest unit test?

Thanks